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Screamin' Swing is a pneumatically powered pendulum ride designed and manufactured by S&S - Sansei Technologies. The ride was first installed and operated in 2004 at Knott's Berry Farm in Buena Park, California , United States .
A motorized wheelchair, powerchair, electric wheelchair, or electric-powered wheelchair (EPW) is a wheelchair that is propelled by means of an electric motor (usually using differential steering) rather than manual power. Motorized wheelchairs are useful for those unable to propel a manual wheelchair or who may need to use a wheelchair for ...
Stephan Farffler (1633 – October 24, 1689 [1]), sometimes spelled Stephan Farfler, was a German watchmaker of the seventeenth century whose invention of a manumotive carriage in 1655 is widely considered to have been the first self-propelled wheelchair.
Farffler's carriage of 1655. Invalid carriages were usually single seater road vehicles, buggies, or self-propelled vehicles for disabled people. They pre-dated modern electric mobility scooters and, from the 1920s, were generally powered by small gasoline/petrol engines, although some were battery powered.
An attendant-propelled wheelchair (also known as a companion or transfer chair) is generally similar to a self-propelled manual wheelchair, but with small diameter wheels at both front and rear. The chair is maneuvered and controlled by a person standing at the rear and pushing on handles incorporated into the frame.
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